Real Estate Inventories - Summary of Real Estate Held for Development and Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Real Estate Properties [Line Items]
Real estate inventories	$ 49,842	$ 38,223
Land and Land Development Costs [Member]
Real Estate Properties [Line Items]
Real estate inventories	33,355	22,896
Cost of Construction (Including Capitalized Interest and Real Estate Taxes) [Member]
Real Estate Properties [Line Items]
Real estate inventories	$ 16,487	$ 15,327

Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant